workspace_id: Workspace IDname: Display name for the fielddefault_value: Default value for the fieldRenewal Date becomes renewal_date). The normalized name is what the List endpoint returns and what Update/Delete expect.email, first_name), an existing additional field, or a custom variable already used by one of the workspace's campaigns.curl --location 'https://api.plusvibe.ai/api/v1/workspaces/additional-fields' \
--header 'x-api-key: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"workspace_id": "65099a0dd96fae8ab61130c0",
"name": "Industry",
"default_value": "SaaS"
}'{
"status": "success"
}